Home / 421,281.30-631,902.51-105,731.22

Finding the Fourth Proportional to 421,281.30, 631,902.51 and 105,731.22

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Solution

The fourth proportional to 421,281.30, 631,902.51 and 105,731.22 is: 158,591.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,281.30 : 631,902.51 = 105,731.22 : x
  2. Step 2: Convert to fraction form
    421,281.30/631,902.51 = 105,731.22/x
  3. Step 3: Cross multiply
    421,281.30x = 631,902.51 × 105,731.22
  4. Step 4: Simplify right side
    421,281.30x = 66,811,823,303.36
  5. Step 5: Solve for x
    x = 66,811,823,303.36/421,281.30
  6. Step 6: Final answer
    x = 158,591.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.